Laminated metal barrel



June 9, 1936. s. s. BATTLES 2,043,694

LAMINATED METAL BARREL Filed Jan. 14, 1953 Ell Patented June 9, 1936UNITED STATES PATENT OFFICE Stewart S. Battles, Chicago, Ill., assignor,by mesne assignments, to Borg-Warner Corporation, Chicago, 11]., acorporation of Illinois Application January 14, 1933, Serial No. 651,716

6 Claims.

This invention relates to metal containers and will be described asincorporated in a barrel formed of composite metal.

An object of this invention is the provision of a metal barrel formed ofsheet material, the sheet metal including an inwardly disposedlamination of non-corrodible material, preferably an alloy for resistingpossible chemical actions of the contents of the barrel on the innersurface, and a lamination of other metal preferably a mild steeldisposed outwardly.

Another object is the provision of a barrel having a portion formed oftwo composite sheets of metal each including a non-corrodible portion,

' such that the completed barrel will have no corrodible' portionsdisposed inwardly and such that the sheets forming the barrel will bewelded together by. adeposit of metal on the inside of the barrelwithout causing an appreciable irregularity on the inner surface of thebarrel.

The metal employed-in the construction of barrels in accordance withthis invention is preferably of the kind, and made by the process setforth in United States Letters Patent No. 1,868,749 issued July 26, 1932to Stephen L. Ingersoll, to which'reference is hereby made for adetailed description of the metal and process of forming the compositesheets.

Other objects and advantages of this invention will become apparent fromthe following detail description with reference to the accompanyingdrawing.

(in the drawing:

Figure 1 is an elevatlonal view of a barrel incorporating my invention,a portion of the same being shown in section to better disclose theconstruetlon of the same.

Figure 2 is an enlarged fragmentary section taken on the line 11-11 ofFigure 1.

Figure 3 is a section similar to Figure 2 but illustrating a modifiedform of construction, and

Figure 4 is an enlarged section similar to Figure 2 but illustrating afurther modification of the invention.

As shown on the drawing:

The barrel 5 preferably comprises end or base portions 6 and l and acontainer portion ll. The container portion is preferably formed of twodeformed sheets 9 and ii! of metal. Each sheet and it was preferablyformed from a single ably consisting of stainless steel or other nowcorrodible chromium steel alloy. The two laminations are intimatelywelded together throughout their engaging areas forming a single sheetof composite metal. The term composite as used in this specification andin the claims has reference to this specific type of sheet metalconstruction as set forth in the above mentioned patent to'Stephen L.Ingersoll. The marginal portions of the sheets 9 and ID are flaredoutwardly at l3 and M to provide an annular space which is preferablyfilled with a deposit of stainless steel as indicated at to form apermanent weld for securing the flared portions I3 and I4 together inalignment and with the inner surface of the deposited metal forming theweld, being in substantial alignment with the inner surface of thebarrel to avoid appreciable irregularities and crevices into which thecontents of the barrel might gain access and make cleaning diflicult.

The edge portions l1 and I8 of the sheets 9 and in are permanentlyinterlocked, to relieve excessive strain at the welded joint, and toprovide an annular reinforcement around the central portion of thebarrel. In the form of the invention shown in Figure 3, the edgeportions of the flared margins are rolled together instead of beingfolded together as shown in Figure 2, thereby forming a relatively rigidannular roll 2| extending around the barrel and interlocking the sheets9 and I0 together. In the modification shown in Figure 4, the flaredmargins l3 and M are very short and the outwardly disposed edges arepermanently welded together by an annular deposit 22 of metal. In thismodification, the exterior weld 22 is preferably of a tough mild steel,whereas the inner weld i5 is a suitable corrosion-resisting allow orstainless steel.

Referring now to Figure 1, there are provided annular corrugations 26and 21 for reinforcing the sheet metal of which the barrel is composed,in order that the barrel may be as light as possible and sufiicientlyrigid to withstand rough handling and rolling when filled. One end ofthe barrel is provided with an opening 28 through which thebarrel may befilled with beverages such as beer and the like. The ends of the barrel3i and 32 are preferably dome-shaped and side portions of the barrel,thus avoiding all sharp corners and recesses which would be difficult toclean. The end or base portions 6 and l are preferably substantiallycylindrical, fitting upon the ends of the container portion and bearesubstantially arcuate where they join the r ing permanently welded inposition as indicated at 33 and 34. The extreme end edges of the baseportion may be rolled as at 36 and 31 to reinforce the same and preventbending when being handled.

The base portions 6 and I are provided with corrugations 42 and 43 whichengage the container portion adjacent the welds 33 and 34 re-'spectively, and serve as a guide in positioning the base portions aswell as to provide reinforcement to withstand shock and relieve thewelds of undue stress It will be understood from the foregoingdescription that this invention is susceptible of various forms andmodifications without departing from the principle of the same. Idesire,

' therefore, that the patent to be granted hereon shall not berestricted in any manner, except as necessitated by the prior art.

I claim as my invention:

1. A metal container comprising a pair of superimposed tub-like membershaving continuous inside surfaces of a corrosion resistant alloy backedby an outside integral lamination of tough metal. bonded thereto at allpoints, outwardly flanged abutting edges around the peripheryof saidtub-like members defining a groove between the tubs, a. weld ofcorrosion resistant alloy in said groove joining the tubs together andadditional reinforcing structure cooperating with the outside of saidtubs for holding the tubs in assembled relation.

2. A metal container comprising ,a pair of superimposed tub membershaving continuous inside surfaces of stainless steel backed by anintegral layer of mild steel bonded thereto at all points, outwardlyflanged abutting edges around the peripheries of each of said tubmembers defining a groove between the tubs, a weld of stainless steel insaid groove joining the tubs together and an outside weld of mild steelbetween the abutting edges of the tubs for reinforcing the inside weld.

3. A barrel including complemental composite sheet metal tub sectionshaving an interior surface of non-corrosive metal and an exteriorsurbonding said tub sections together comprising a welding body ofnon-corrosive metal filling such groove fiushly with the interior ofsaid barrel, and additional bonding means exteriorly of said barrel andin registry with such groove.

4. A barrel comprising complemental composite sheet metal tub sectionshaving an interior surface of non-corrosive metal and an exteriorsurface of a different metal, said sections having opposed contiguousperipheral flanges turned outwardly thereby effecting an internalannular groove circumscribing said barrel, means for bonding said tubsections together comprising a welding body of non-corrosive metalfilling such groove fiushly with the interior of said barrel, andadditional structure augmenting the bond of said welding body, saidstructure comprising said flanges disposed in an interlocking relationexteriorly of said barrel.

5. A barrel comprising complemental composite sheet metal tub sectionshaving an interior surface of non-corrosive metal and an exteriorsurface of a different metal, said sections having opposed contiguousperipheral flanges turned outwardly thereby efiecting an internalannular groove circumscribing said barrel, means for bonding said tubsections together comprising a welding body of non-corrosive metalfilling such groove fiushly with the interior of said barrel, andadditional structure augmenting the bond of said welding body, saidstructure comprising a reinforcing loop substantially circular in crosssection and formed of said flanges disposed in an interlocking relationexteriorly of said barrel.

6. A barrel comprising complemental composite sheet metal tub sectionshaving an interior surface of non-corrosive metal and an exteriorsurface of a different metal, said sections having opposed contiguousperipheral flanges turned outwardly thereby efiecting an internalannular groove circumscribing said barrel, means for bonding said tubsections together comprising a welding body of non-corrosive metalfilling such groove fiushly with the interior of said barrel, andadditional structure augmenting the bond of said -welding body, saidstructure comprising a reinforcing band fiat in cross section and formedof said flanges disposed in an interlocking relation exteriorly of saidbarrel.

STEWART S. BATTLES.

